He currently plays for Real Espana, wearing the number 16 shirt. At the international level, he represents Honduras U20. He plays primarily as a Forward. His current market value is estimated at 150K €.

His most recent move was a Loan from Real Espana to Houston Dynamo on 2026-06-30.

In the Honduras Primera Division 2025-2026 season, Exon Arzú scored 0 goals and provided 0 assists across 7 appearances, averaging 0 goals per game with 0 shots attempted and 0 on target.